Detected events

Evento sin nivel INES · Esfahan province (Irán): Aerial and missile attacks on the Esfahan’s Mobarakeh Steel Production Factory by the Israel regime and the United States of America

On the early minutes of 1 April 2026, the Iran Nuclear Regulatory Authority was notified that on 31 March at approximately 23:00 Iran Standard Time (IRST), an industrial facility—the Esfahan’s Mobarakeh Steel Production Factory—which uses sealed radioactive sources for gauging, had been subjected to aerial and missile strikes by the Israel regime and the United States of America. As of this moment, no increase in off…

Evento sin nivel INES · Chaharmahal and Bakhtiari province (Irán): Aerial and missile attacks on the Sefid Dasht Steel Production Factory in Chaharmahal and Bakhtiari province by the Israel regime and the United States of Ameri

On 1 April 2026, the Iran Nuclear Regulatory Authority was notified that an industrial facility—the Sefid Dasht Steel Production Factory—which uses sealed radioactive sources for gauging, had been subjected to aerial and missile strikes by the Israel regime and the United States of America. As of this moment, no increase in off-site radiation levels or any contamination has been detected. But up to now, there is no i…

Davis-Besse increased its power output from 30% to 65%

Grand Gulf 1 reduced its output from 88% to 64%

Catawba 2 was taken offline (98% → 0%)

Davis-Besse returned to service (0% → 30%)

Browns Ferry 3 increased its power output from 60% to 93%

Grand Gulf 1 increased its power output from 35% to 76%

Quad Cities 2 was taken offline (84% → 0%)

Browns Ferry 3 increased its power output from 20% to 60%

Evento sin nivel INES · Khuzestan province (Irán): Aerial and missile attacks on the Khuzestan Steel Production Factory by the Israel regime and the United States of America

Complementary Report — On 27 March, the Iran Nuclear Regulatory Authority was notified that an industrial facility, the Khuzestan Steel Production Factory, which uses sealed Co 60 and Cs 137 sources for gauging, had been subjected to aerial and missile strikes by the Israel regime and the United States of America. After the situation at the facility was stabilized, radiological assessors conducted radiation monitorin…

Evento sin nivel INES · Yazd Province (Irán): Aerial and missile attacks on Shahid Rezayee Nejad Yellow Cake Production Facility by the Zionist regime and the United States of America

On 27 March 2026, Iran Nuclear Regulatory Authority was informed that at approximately 15:30 Iran Standard Time (IRST), Shahid Rezayee Nejad Yellow Cake Production Facility in Yazd province was subjected to aerial and missile attacks by the Zionist regime and the United States of America. No increase in off-site radiation levels or any contamination has been detected. It should be emphasized that attacks on nuclear f…

Evento sin nivel INES · Bushehr 1 (Irán): A projectile struck the premises of the Bushehr Nuclear Power Plant

On the early minutes of 28 March 2026, Iran Nuclear Regulatory Authority was notified by the Bushehr Nuclear Power Plant that on 27 March at approximately 23:40 Iran Standard Time (IRST), a projectile struck the premises of the power plant due to the aerial and missile attacks by the Israel regime and the United States of America. As of this moment, no damage to the facility or injuries to individuals have been repor…

Browns Ferry 3 returned to service (0% → 15%)

Grand Gulf 1 returned to service (0% → 14%)

Evento sin nivel INES · Bushehr 1 (Irán): A projectile struck the premises of the Bushehr Nuclear Power Plant

On 24 March 2026, Iran Nuclear Regulatory Authority was informed by the Bushehr Nuclear Power Plant that at approximately 21:08 Iran Standard Time (IRST), a projectile struck the premises of the power plant due to the aerial and missile attacks by the Zionist regime and the United States of America As of this moment, no damage to the facility or injuries to individuals have been reported and the condition of plant is…

Vogtle 4 increased its power output from 47% to 100%

Fermi 2 went offline (91% → 0%)

Hatch 2 reduced output from 100% to 80%

Susquehanna 1 went offline (79% → 0%)

McGuire 2 was taken offline (15% → 0%)

Evento sin nivel INES · Natanz Nuclear Facility (Irán): Aerial and missile attacks on Natanz Nuclear Facility by the Zionist regime and the United States of America

On 21 March 2026 (at the first day of Nowruz and Iranian New Year), Iran Nuclear Regulatory Authority was informed that at approximately 9:30 Iran Standard Time (IRST), again the Natanz nuclear facility was subjected to aerial and missile attacks by the Zionist regime and the United States of America. No increase in off-site radiation levels has been reported as of this time. It should be emphasized that attacks on n…

McGuire 2 reduced output from 97% to 15%

South Texas 1 went offline (100% → 0%)

Palo Verde 2 went offline (95% → 0%)

Evento sin nivel INES · Bushehr 1 (Irán): A projectile struck the premises of the Bushehr Nuclear Power Plant

On 17 March 2026, Iran Nuclear Regulatory Authority was informed by the Bushehr Nuclear Power Plant that at approximately 19:00 Iran Standard Time (IRST), a projectile struck the premises of the power plant. As of this moment, no damage to the facility or injuries to individuals have been reported. It should be emphasized that attacks on nuclear facilities are prohibited, and such actions are contrary to all internat…

Calvert Cliffs 1 increased its power output from 75% to 100%

Calvert Cliffs 1 increased its output from 28% to 75%

LaSalle 1 increased its power output from 65% to 85%

Calvert Cliffs 1 returned to service (0% → 28%)

Peach Bottom 3 increased its power output from 72% to 100%

Arkansas Nuclear 2 went offline (80% → 0%)

LaSalle 1 reduced its output from 100% to 70%

Peach Bottom 3 reduced its output from 100% to 72%

Point Beach 2 was taken offline (95% → 0%)

Vogtle 4 reduced output from 100% to 30%

Penly 1: reconnection to the power grid

EDF, March 13, 2026: “Reconnection of Generation Unit No. 1 at the Penly Nuclear Power Plant.” Tags: Maintenance.

Hope Creek 1 increased its power output from 45% to 100%

Hope Creek 1 increased its output from 14% to 45%

Clinton increased power output from 76% to 99%

Nine Mile Point 2 was taken offline (87% → 0%)

Clinton reduced power output from 99% to 76%

Dresden 3 increased its power output from 73% to 100%

FitzPatrick increased its output from 73% to 100%

Hope Creek 1 returned to service (0% → 2%)

Limerick 2 increased its power output from 67% to 95%

Event with no INES level · Esfahan Province/irradiation facility (Iran): Air and missile attacks on a gamma irradiation sterilization facility

On March 7, 2026, the Iranian Nuclear Regulatory Authority (INRA) received information regarding aerial and missile attacks on a gamma irradiation sterilization facility in Esfahan Province by the Zionist regime and the United States of America, which caused severe damage to the facility. This facility was used for the radiation preservation of agricultural products. To date, environmental monitoring results have sho…

Dresden 3 reduced output from 100% to 73%

FitzPatrick reduced output from 100% to 73%

Limerick 2 reduced its output from 100% to 67%

Hatch 1 increased its power output from 68% to 96%

Hatch 1 reduced output from 98% to 68%

Hatch 1 increased its power output from 55% to 98%

South Texas 1 increased its output by 14% → 94%

Hatch 1 increased its output from 22% to 55%

Byron 1 went offline (85% → 0%)

Diablo Canyon 1 increased its power output from 50% to 100%

Fermi 2 increased its power output from 75% to 100%

LaSalle 1 increased its power output from 69% to 99%

South Texas 1 reduced its output from 100% to 15%

Evento sin nivel INES · Natanz Nuclear Facility (Irán): Aerial and missile attacks on Natanz Nuclear Facility by the Zionist regime and the United States of America

Despite the prohibition of attacks on nuclear facilities and the fact that such actions contravene all international norms and principles of international law, again the Natanz nuclear facility was subjected to aerial and missile attacks by the Zionist regime and the United States of America on 1 March 2026. No increase in off-site radiation levels has been reported as of this time.

Davis-Besse was taken offline (93% → 0%)

Hatch 1 returned to service (0% → 20%)

LaSalle 1 increased its output by 10% → 69%

Diablo Canyon 1 reduced its power output from 100% to 55%

LaSalle 1 returned to service (0% → 10%)

Summer was taken out of service (86% → 0%)

Brunswick 1 was taken offline (90% → 0%)

Diablo Canyon 1 increased its power output from 52% to 100%

Salem 1 increased its power output from 76% to 100%

Hope Creek 1 went offline (100% → 0%)

Salem 1 reduced its power output from 100% to 76%

Vogtle 1 went offline (92% → 0%)

Browns Ferry 3 went offline (96% → 0%)

Diablo Canyon 1 reduced its power output from 100% to 50%

Monticello went offline (100% → 0%)

Columbia Generating Station increased its output from 46% to 100%

Columbia Generating Station increased its output from 6% to 46%

Evento INES 2 · Agen-Nerac Hospital Centre (Francia): External contamination of a worker in a nuclear medicine department

On 6 March 2026, the Agen-Nerac Hospital Centre reported to ASNR an incident concerning the contamination of a radiographer in the nuclear medicine department whilst preparing for a positron emission tomography (PET) scan. Whilst drawing a sample from the vial, the medical device failed to draw the full prescribed volume. The vial became overpressurised following the automatic reinjection of the diluted dose into the…

Columbia Generating Station returned to service (0% → 6%)